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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef DEMO_ITEM_H
#define DEMO_ITEM_H
#include <QtGui>
class DemoItemAnimation;
class Guide;
class SharedImage
{
public:
SharedImage() : refCount(0), image(0), pixmap(0){};
~SharedImage()
{
delete image;
delete pixmap;
}
int refCount;
QImage *image;
QPixmap *pixmap;
QMatrix matrix;
QRectF unscaledBoundingRect;
};
class DemoItem : public QGraphicsItem
{
public:
DemoItem(QGraphicsScene *scene = 0, QGraphicsItem *parent = 0);
virtual ~DemoItem();
bool inTransition();
virtual void animationStarted(int id = 0){ Q_UNUSED(id); };
virtual void animationStopped(int id = 0){ Q_UNUSED(id); };
virtual void prepare(){};
void setRecursiveVisible(bool visible);
void useSharedImage(const QString &hashKey);
void setNeverVisible(bool never = true);
static void setMatrix(const QMatrix &matrix);
virtual QRectF boundingRect() const; // overridden
void setPosUsingSheepDog(const QPointF &dest, const QRectF &sceneFence);
qreal opacity;
bool locked;
DemoItemAnimation *currentAnimation;
bool noSubPixeling;
// Used if controlled by a guide:
void useGuide(Guide *guide, float startFrame = 0);
void guideAdvance(float distance);
void guideMove(float moveSpeed);
void setGuidedPos(const QPointF &position);
QPointF getGuidedPos();
float startFrame;
float guideFrame;
Guide *currGuide;
protected:
virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option = 0, QWidget *widget = 0); // overridden
virtual QImage *createImage(const QMatrix &) const { return 0; };
virtual bool collidesWithItem(const QGraphicsItem *, Qt::ItemSelectionMode) const { return false; };
bool prepared;
private:
SharedImage *sharedImage;
QString hashKey;
bool neverVisible;
bool validateImage();
// Used if controlled by a guide:
void switchGuide(Guide *guide);
friend class Guide;
QPointF guidedPos;
// The next static hash is shared amongst all demo items, and
// has the purpose of reusing images to save memory and time
static QHash<QString, SharedImage *> sharedImageHash;
static QMatrix matrix;
};
#endif // DEMO_ITEM_H
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